Home / 281,039.45-387,843.68-153,715.05

Finding the Fourth Proportional to 281,039.45, 387,843.68 and 153,715.05

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Solution

The fourth proportional to 281,039.45, 387,843.68 and 153,715.05 is: 212,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,039.45 : 387,843.68 = 153,715.05 : x
  2. Step 2: Convert to fraction form
    281,039.45/387,843.68 = 153,715.05/x
  3. Step 3: Cross multiply
    281,039.45x = 387,843.68 × 153,715.05
  4. Step 4: Simplify right side
    281,039.45x = 59,617,407,955.59
  5. Step 5: Solve for x
    x = 59,617,407,955.59/281,039.45
  6. Step 6: Final answer
    x = 212,131.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.